Neural Control & Coordination PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Neural Control & Coordination · Set 1 (Q1-30)
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1. $Which of the following receptors are specifically responsible for maintenance of balance of body and posture?$ (1) $Basilar membrane and otoliths$ (2) $Hair cells and organ of corti$ (3) $Tectorial membrane and macula$ (4) $Crista ampullaris and macula$ 2. $Which part of the brain is responsible for thermoregulation?$ (1) $Cerebrum$ (2) $Hypothalamus$ (3) $Corpus callosum$ (4) $Medulla oblongata$ 3. $Photosensitive compound in human eye is made up of:$ (1) $Guanosine and Retinol$ (2) $Opsin and Retinal$ (3) $Opsin and Retinol$ (4) $Transducin and Retinene$ 4. $A person entering an empty room suddenly finds a snake right in front of the opening of door. Which one of the following is likely to happen in his neuro-hormonal control system?$ (1) $Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla.$ (2) $Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse.$ (3) $Hypothalamus activates the parasympathetic division of brain.$ (4) $Sympathetic nervous system is activated releasing epinephrine and the system is activated releasing epinephrine and norepinephrine from adrenal cortex$ 5. $The transparent lens in the human eye is held in its place by$ (1) $ligaments attached to the ciliary body$ (2) $ligaments attached to the iris$ (3) $smooth muscles attached to the iris$ (4) $smooth muscles attached to the ciliary body$ 6. $The purplish red pigment rhodopsin contained in the rods type of photoreceptor cells of the human eyes is a derivative of$ (1) $Vitamin C$ (2) $Vitamin D$ (3) $Vitamin A$ (4) $Vitamin B$ 7. $Receptor sites for neurotransmitters are present on :$ (1) $Pre-synaptic membrane$ (2) $Tips of axons$ (3) $Post-synaptic membrane$ (4) $Membrane of synaptic vesicles$ 8. $Which of the following is not at autoimmune disease?$ (1) $Psoriasis$ (2) $Rheumatoid arthritis$ (3) $Alzheimer's disease$ (4) $Vitiligo$ 9. $In mammalian eye, the 'fovea' is the center of the visual field, where :$ (1) $more rods than cones are found.$ (2) $high density of cones occur, but has no rods$ (3) $the optic nerve leaves the eye$ (4) $only rods are present$ 10. $Which one of the following statements is not correct?$ (1) $Retinal is the light absorbing portion of visual photo pigments.$ (2) $In retina the rods have the photopigment rhodopsin while cones have three different photopigments.$ (3) $Retinal is a derivative of Vitamin C.$ (4) $Rhodopsin is the purplish red protein present in rods only.$ 11. $When a neuron is in a resting state, i.e., not conducting any impulse, the axonal membrane is$ (1) $Equally permeable to both N a^{+} and K^{+} ions.$ (2) $Impermeable to both N a^{+} and K^{+} ions.$ (3) $Comparatively more permeable to K^{+} ions and nearly impermeable to N a^{+} ions.$ (4) $Comparatively more permeable to N a^{+} ions and nearly impermeable to K^{+} ions.$ 12. $Injury localized to the hypothalamus would most likely disrupt the$ (1) $Short-term memory$ (2) $Coordination during locomotion$ (3) $Executive functions, such as decision making$ (4) $Regulation of body temperature$ 13. $Select the answer with correct matching of the structure, its location and function. [(A): Structure, (B): Location, (C]: Function] Structure Location Function$ (1) $Eustachian tube Anterior part of internal ear Equalizes air pressure on either sides of tympanic membrane.$ (2) $Cerebellum Mid-brain Controls respiration and gastric secretions.$ (3) $Hypothalamus Fore-brain Controls body temperature, urge for eating and drinking.$ (4) $Blind spot Near the place where optic nerve leaves the eye Rods and cones are present but inactive here.$ 14. $Which of the following statements is correct?$ (1) $Cornea is an external, transparent and protective proteinacious covering of the eye-ball.$ (2) $Cornea consists of dense connective tissue of elastin and can repair itself.$ (3) $Cornea is convex, transparent layer which is highly vascularised.$ (4) $Cornea consists of dense matrix of collagen and is the most sensitive portion of the eye.$ 15. $Destruction of the anterior horn cells of the spinal cord would result in loss of$ (1) $Voluntary motor impulse$ (2) $Commissural impulses$ (3) $Integrating impulses$ (4) $Sensory impulses$ 16. $During the transmission of nerve impulse through a nerve fiber, the potential on the inner side of the plasma membrane has which type of electric charge?$ (1) $First positive, then negative and continue to be negative$ (2) $First negative, then positive and continue to be positive$ (3) $First positive, then negative and again back to positive$ (4) $First negative, then positive and again back to negative$ 17. $Which one of the following pairs of structures distinguishes a nerve cell from other types of cell?$ (1) $Vacuoles and fibres$ (2) $Flagellum and medullary sheath$ (3) $Nucleus and mitochondria$ (4) $Perikaryon and dendrites$ 18. $Which one of the following statements is correct?$ (1) $Neither hormones control neural activity nor the neuron control endocrine activity$ (2) $Endocrine glands regulate neural activity, but not vice versa$ (3) $Neurons regulate endocrine activity, but not vice versa$ (4) $Endocrine glands regulate neural activity, and nervous system regulates endocrine glands$ 19. $A gymnast is able to balance his body upside down even in the total darkness because of :-$ (1) $Vestibular apparatus$ (2) $Tectorial membrane$ (3) $Organ of Corti$ (4) $Cochlea$ 20. $Which one of the following does not act as a neurotransmitter?$ (1) $Norepinephrine$ (2) $Cortisone$ (3) $Acetylcholine$ (4) $Epinephrin$ 21. $Which of the following structures or regions is incorrectly paired with its function?$ (1) $Medulla oblongata : controls respiration and cardiovascular reflexes.$ (2) $Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.$ (3) $Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst.$ (4) $Corpus callosum : band of fibers connecting left and right cerebral hemispheres.$ 22. $How do parasympathetic neural signals affect the working of the heart?$ (1) $Reduce both heart rate and cardiac output.$ (2) $Heart rate is increased without affecting the cardiac output.$ (3) $Both heart rate and cardiac output increase.$ (4) $Heart rate decreases but cardiac output increases.$ 23. $Which of the following statements is not correct?$ (1) $An action potential in an axon does not move backward because the segment behind is in a refractory phase$ (2) $Depolarisation of hair cells of cochlea results in the opening of the mechanically gated potassium -ion channels.$ (3) $Rods are very sensitive and contribute to daylight vision.$ (4) $In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.$ 24. $Which of the following regions of the brain is incorrectly paired with its function?$ (1) $Medulla oblongata - Homeostatic control$ (2) $Cerebellum - Language comprehension$ (3) $Corpus callosum - Communication between the left and right cerebral cortices$ (4) $Cerebrum - Calculation and contemplation$ 25. $During the propagation of a nerve impulse, the action potential results from the movement of :$ (1) $K^{+} from intracellular fluid to extracellular fluid$ (2) $N a^{+} from extracellular fluid to intracellular fluid$ (3) $K^{+} from extracellular fluid to intracellular fluid$ (4) $N a^{+} from intracellular fluid to extracellular fluid$ 26. $The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleasure, rage, fear etc. are.$ (1) $Corpus callosum and thalamus$ (2) $Limbic system & hypothalamus$ (3) $Corpora quadrigemina & hippocampus$ (4) $Brain stem & epithalamus$ 27. $The nerve centers which control the body temperature and the urge for eating are contained in$ (1) $Hypothalamus$ (2) $Pons$ (3) $Cerebellum$ (4) $Thalamus$ 28. $The nerve centres which control the body temperature and the urge for eating are contained in:$ (1) $Cerebellum$ (2) $Thalamus$ (3) $Hypothalamus$ (4) $Pons$ 29. $The part of the peripheral nervous system that comprises the whole complex of nerves, fibres, ganglia and plexuses by which impulses travel from the central nervous system to the viscera and from viscera to central nervous system is called$ (1) $Autonomic nervous system$ (2) $Sympathetic nervous system$ (3) $Parasympathetic nervous system$ (4) $Visceral nervous system$ 30. $Injury localized to the hypothalamus would most likely disrupt :$ (1) $short - term memory.$ (2) $co-ordination during locomotion.$ (3) $executive functions, such as decision making.$ (4) $regulation of body temperature.$